Patent US741860A successfully refreshed from Google Patents.
US4292185A
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Polymeric additive for lubricants and fuels
Assignee: Rohm and Haas Co
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Filing: 1979-12-31
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Granted: 1981-09-29
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Expires: 1999-12-31
Abstract
Abstract Polymeric additives comprising a diene-modified mono-olefinic backbone polymer functionalized with chlorosulfonyl isocyanate and post-reacted with a nitrogen compound. The additives impart combined detergent, viscosity index improvement and other useful properties to lubricating oils and hydrocarbon motor fuels.
Inventors
- 👤 Joseph M. Bollinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:00
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/234; C10L1/236; C10L1/2364; C10L1/24; C10L1/2462; C10L1/2475; C10M; C10M143/00; C10M2203/00; C10M2203/06; C10M2205/00; C10M2205/02; C10M2205/026; C10M2205/22; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/028; C10M2207/10; C10M2207/14; C10M2207/144; C10M2207/146; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/286; C10M2207/34; C10M2209/00; C10M2209/02; C10M2209/04; C10M2209/06; C10M2209/062; C10M2209/08; C10M2209/084; C10M2209/086; C10M2211/00; C10M2211/06; C10M2213/00; C10M2213/02; C10M2213/04; C10M2213/06; C10M2213/062; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/066; C10M2217/00; C10M2217/02; C10M2217/024; C10M2217/028; C10M2217/06; C10M2219/00; C10M2219/02; C10M2219/022; C10M2219/04; C10M2219/044; C10M2219/06; C10M2219/062; C10M2219/066; C10M2219/068; C10M2219/08; C10M2219/082; C10M2219/083; C10M2219/10; C10M2219/104; C10M2219/108; C10M2221/00; C10M2221/04; C10M2221/041; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/042; C10M2223/045; C10M2223/12; C10M2225/00; C10M2225/04; C10M2225/041; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/05; C10N; C10N2010/00; C10N2010/04; C10N2010/08; C10N2010/12; C10N2040/00; C10N2040/02; C10N2040/08; C10N2050/00; C10N2050/10; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
65 words
A polymeric additive for lubricating oils and hydrocarbon fuels, comprising an oil-soluble, viscosity index improving, non-conjugated diene-modified mono-olefinic backbone polymer containing about 1-10 mole % diene unsaturation, said backbone polymer being functionalized with chlorosulfonyl isocyanate and post-reacted with a nitrogen compound effective for imparting dispersant activity to said backbone polymer, said nitrogen compound being an amine having at least one primary or secondary amino group.
Claim 2
Dependent Claim
65 words
A polymeric additive for lubricating oils and hydrocarbon fuels, comprising an oil-soluble, viscosity index improving, non-conjugated diene-modified mono-olefinic backbone polymer containing about 1-10 mole % diene unsaturation, said backbone polymer being functionalized with chlorosulfonyl isocyanate and post-reacted with a nitrogen compound effective for imparting dispersant activity to said backbone polymer, said nitrogen compound being an amine having at least one primary or secondary amino group.
Claim 3
Dependent Claim
14 words
An additive as in claim 1 wherein said diene unsaturation is about 2.5-8.0 mole%.
Claim 4
Dependent Claim
15 words
An additive as in claim 1 wherein said backbone polymer is a diene-modified ethylene-propylene copolymer.
Claim 5
Dependent Claim
13 words
An additive as in claim 1 wherein said nitrogen compound is a polyamine.
Claim 6
Dependent Claim
33 words
An additive as in claim 1 wherein the diene modifier is ethylidene norbornene, methylene norbornene, 1,4-hexadiene or dicyclopentadiene, and the amine is a dialkylaminoalkylamine, an aminoalkylpyridine, an N-aminoalkylmorpholine, a polyalkylenepolyamine, or an alkylenepolyamine.
Claim 7
Dependent Claim
29 words
An additive as in claim 1 wherein the diene modifier is ethylidene norbornene, methylene norbornene, 1,4-hexadiene or dicyclopentadiene and the amine is dimethylaminopropylamine, 4-aminomethylpyridine, N-3-aminopropylmorpholine, diethylenetriamine, ethylenediamine, or triethylenetetramine.
Claim 8
Dependent Claim
31 words
An additive as in claim 1 wherein, prior to the post-reaction with nitrogen compound, the backbone polymer functionalized with the chlorosulfonyl isocyanate is reacted with bisulfite to remove the chlorosulfonyl functionality.
Claim 9
Dependent Claim
73 words
A composition comprising a major amount of a lubricating oil and a minor detergent amount of a polymeric additive comprising an oil-soluble, viscosity index improving, non-conjugated diene-modified mono-olefinic backbone polymer containing about 1-10% diene unsaturation, said backbone polymer being functionalized with chlorosulfonyl isocyanate and post-reacted with a nitrogen compound effective for imparting dispersant acitivity to said backbone polymer, said nitrogen compound being an amine having at least one primary or secondary amino group.
Claim 10
Dependent Claim
73 words
A composition comprising a major amount of a lubricating oil and a minor detergent amount of a polymeric additive comprising an oil-soluble, viscosity index improving, non-conjugated diene-modified mono-olefinic backbone polymer containing about 1-10% diene unsaturation, said backbone polymer being functionalized with chlorosulfonyl isocyanate and post-reacted with a nitrogen compound effective for imparting dispersant acitivity to said backbone polymer, said nitrogen compound being an amine having at least one primary or secondary amino group.
Claim 11
Dependent Claim
15 words
A composition as in claim 8 wherein said backbone polymer is a diene-modified ethylene-propylene copolymer.
Claim 12
Dependent Claim
15 words
A composition as in claim 8 wherein said diene unsaturation is about 2.5-8 mole %.
Claim 13
Dependent Claim
13 words
A composition as in claim 8 wherein said nitrogen compound is a polyamine.
Claim 14
Dependent Claim
33 words
A composition as in claim 8 wherein the diene modifier is ethylidene norbornene, methylene norbornene, 1,4-hexadiene or dicyclopentadiene, and the amine is a dialkylaminoalkylamine, an aminoalkylpyridine, an N-aminoalkylmorpholine, a polyalkylenepolyamine, or an alkylenepolyamine.
Claim 15
Dependent Claim
29 words
A composition as in claim 8 wherein the diene modifier is ethylidene norbornene, methylene norbornene, 1,4-hexadiene or dicyclopentadiene and the amine is dimethylaminopropylamine, 4-aminomethylpyridine, N-3-aminopropylmorpholine, diethylenetriamine, ethylenediamine, or triethylenetetramine.
Claim 16
Dependent Claim
31 words
A composition as in claim 8 wherein the polymeric additive, after functionalization with chlorosulfonyl isocyanate and before reaction with the nitrogen compound, is reacted with bisulfite to remove the chlorosulfonyl functionality.
Claim 17
Independent Claim
64 words
A method for preparing a polymeric additive, comprising reacting an oil-soluble, viscosity index improving, non-conjugated diene-modified mono-olefinic backbone polymer containing about 1-10 mole % diene unsaturation with chlorosulfonyl isocyanate, and post-reacting the resulting functionalized backbone polymer with a nitrogen compound effective for imparting dispersant activity to the backbone polymer, said nitrogen compound being an amine having at least one primary or secondary amino group.
Claim 18
Independent Claim
64 words
A method for preparing a polymeric additive, comprising reacting an oil-soluble, viscosity index improving, non-conjugated diene-modified mono-olefinic backbone polymer containing about 1-10 mole % diene unsaturation with chlorosulfonyl isocyanate, and post-reacting the resulting functionalized backbone polymer with a nitrogen compound effective for imparting dispersant activity to the backbone polymer, said nitrogen compound being an amine having at least one primary or secondary amino group.
Claim 19
Dependent Claim
15 words
A method as in claim 15 wherein the post-reacted polymer is neutralized after said post-reaction.
Claim 20
Dependent Claim
27 words
A method as in claim 15 wherein, prior to the post-reaction, the functionalized backbone polymer is reacted with bisulfite to eliminate sulfur from said functionalized backbone polymer.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-09-28 | 1985-03-30 | 1985-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-09-28 | 1989-03-30 | 1989-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-09-28 | 1993-03-30 | 1993-09-29 | $7700.00 | Window Closed / Lapsed |